Seiko Cal. 5631 - 704

This Solar model from 1967 features a 39mm Hardlex-Coated Steel case. With its 21mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-32a5a4f78851]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1967

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